[2] The T-40 was designed to be a simple to build, all wood aircraft with folding wings.
The prototype was modified several times from a single-seat aircraft to a two-place.
It also was modified with a bubble canopy and for one flight only, canard control surfaces.
The dual spar, laminar flow wings can be folded for storage.
[5] The prototype T-40, named "Ophelia Bumps",[6] won the 1961 EAA Outstanding Design Award, second place in the 1962 EAA Design Competition, the Lockheed-Marietta Georgia Award for Outstanding Workmanship, the EAA Outstanding Canopy Design Trophy[4] The prototype is now on display at the Saxon Aerospace Museum in Boron, California.